---Hello, this is Mike. Is Dr. Li in?---Sorry, he_________ to the west of Africa to help the patients there.A.has been B. is going C. has gone
He can’t wait ____ his mother the exciting news.
Don’t you think an elephant is ________ than a tiger ?
.Susan’s parents have bought a large house with a swimming pool. It ______be very expensive.
The number of students in Class Ten ____ sixty-six, and a large number of them ____Jay Chou.
Would you like to go for a walk with us? ___, but I’m busy.